Home / 989,801.20-1,484,750.40-517,409.20

Finding the Fourth Proportional to 989,801.20, 1,484,750.40 and 517,409.20

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Solution

The fourth proportional to 989,801.20, 1,484,750.40 and 517,409.20 is: 776,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,801.20 : 1,484,750.40 = 517,409.20 : x
  2. Step 2: Convert to fraction form
    989,801.20/1,484,750.40 = 517,409.20/x
  3. Step 3: Cross multiply
    989,801.20x = 1,484,750.40 × 517,409.20
  4. Step 4: Simplify right side
    989,801.20x = 768,223,516,663.68
  5. Step 5: Solve for x
    x = 768,223,516,663.68/989,801.20
  6. Step 6: Final answer
    x = 776,139.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.