Home / 1,223,498,356.65-1,688,630,224.53-721,829,788.65

Finding the Fourth Proportional to 1,223,498,356.65, 1,688,630,224.53 and 721,829,788.65

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Solution

The fourth proportional to 1,223,498,356.65, 1,688,630,224.53 and 721,829,788.65 is: 996,244,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,498,356.65 : 1,688,630,224.53 = 721,829,788.65 : x
  2. Step 2: Convert to fraction form
    1,223,498,356.65/1,688,630,224.53 = 721,829,788.65/x
  3. Step 3: Cross multiply
    1,223,498,356.65x = 1,688,630,224.53 × 721,829,788.65
  4. Step 4: Simplify right side
    1,223,498,356.65x = 1,218,903,598,080,491,776
  5. Step 5: Solve for x
    x = 1,218,903,598,080,491,776/1,223,498,356.65
  6. Step 6: Final answer
    x = 996,244,573.16

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Double scale
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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.