Home / 877,337.28-1,316,005.85-478,313.60

Finding the Fourth Proportional to 877,337.28, 1,316,005.85 and 478,313.60

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Solution

The fourth proportional to 877,337.28, 1,316,005.85 and 478,313.60 is: 717,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,337.28 : 1,316,005.85 = 478,313.60 : x
  2. Step 2: Convert to fraction form
    877,337.28/1,316,005.85 = 478,313.60/x
  3. Step 3: Cross multiply
    877,337.28x = 1,316,005.85 × 478,313.60
  4. Step 4: Simplify right side
    877,337.28x = 629,463,486,762.96
  5. Step 5: Solve for x
    x = 629,463,486,762.96/877,337.28
  6. Step 6: Final answer
    x = 717,470.35

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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.