Home / 1,223,498,355.14-1,688,630,222.46-721,829,787.14

Finding the Fourth Proportional to 1,223,498,355.14, 1,688,630,222.46 and 721,829,787.14

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Solution

The fourth proportional to 1,223,498,355.14, 1,688,630,222.46 and 721,829,787.14 is: 996,244,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,498,355.14 : 1,688,630,222.46 = 721,829,787.14 : x
  2. Step 2: Convert to fraction form
    1,223,498,355.14/1,688,630,222.46 = 721,829,787.14/x
  3. Step 3: Cross multiply
    1,223,498,355.14x = 1,688,630,222.46 × 721,829,787.14
  4. Step 4: Simplify right side
    1,223,498,355.14x = 1,218,903,594,028,029,440
  5. Step 5: Solve for x
    x = 1,218,903,594,028,029,440/1,223,498,355.14
  6. Step 6: Final answer
    x = 996,244,571.08

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Double scale
Find fourth proportional to 1,223,498,356.14, 1,688,630,223.84 and 721,829,788.14
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.