Home / 738,287.90-1,107,431.85-402,364.70

Finding the Fourth Proportional to 738,287.90, 1,107,431.85 and 402,364.70

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Solution

The fourth proportional to 738,287.90, 1,107,431.85 and 402,364.70 is: 603,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,287.90 : 1,107,431.85 = 402,364.70 : x
  2. Step 2: Convert to fraction form
    738,287.90/1,107,431.85 = 402,364.70/x
  3. Step 3: Cross multiply
    738,287.90x = 1,107,431.85 × 402,364.70
  4. Step 4: Simplify right side
    738,287.90x = 445,591,484,095.70
  5. Step 5: Solve for x
    x = 445,591,484,095.70/738,287.90
  6. Step 6: Final answer
    x = 603,547.05

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Double scale
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Similar ratio
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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.