Home / 521,420.18-719,188.08-478,537.86

Finding the Fourth Proportional to 521,420.18, 719,188.08 and 478,537.86

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Solution

The fourth proportional to 521,420.18, 719,188.08 and 478,537.86 is: 660,041.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,420.18 : 719,188.08 = 478,537.86 : x
  2. Step 2: Convert to fraction form
    521,420.18/719,188.08 = 478,537.86/x
  3. Step 3: Cross multiply
    521,420.18x = 719,188.08 × 478,537.86
  4. Step 4: Simplify right side
    521,420.18x = 344,158,724,740.71
  5. Step 5: Solve for x
    x = 344,158,724,740.71/521,420.18
  6. Step 6: Final answer
    x = 660,041.06

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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.