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Finding the Fourth Proportional to 586,688.40, 878,720.40 and 507,956.40

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Solution

The fourth proportional to 586,688.40, 878,720.40 and 507,956.40 is: 760,798.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,688.40 : 878,720.40 = 507,956.40 : x
  2. Step 2: Convert to fraction form
    586,688.40/878,720.40 = 507,956.40/x
  3. Step 3: Cross multiply
    586,688.40x = 878,720.40 × 507,956.40
  4. Step 4: Simplify right side
    586,688.40x = 446,351,650,990.56
  5. Step 5: Solve for x
    x = 446,351,650,990.56/586,688.40
  6. Step 6: Final answer
    x = 760,798.49

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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.