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Finding the Fourth Proportional to 477,943.10, 716,914.65 and 393,962.30

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Solution

The fourth proportional to 477,943.10, 716,914.65 and 393,962.30 is: 590,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,943.10 : 716,914.65 = 393,962.30 : x
  2. Step 2: Convert to fraction form
    477,943.10/716,914.65 = 393,962.30/x
  3. Step 3: Cross multiply
    477,943.10x = 716,914.65 × 393,962.30
  4. Step 4: Simplify right side
    477,943.10x = 282,437,344,417.70
  5. Step 5: Solve for x
    x = 282,437,344,417.70/477,943.10
  6. Step 6: Final answer
    x = 590,943.45

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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.