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Finding the Fourth Proportional to 578,452.80, 869,752.80 and 487,214.40

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Solution

The fourth proportional to 578,452.80, 869,752.80 and 487,214.40 is: 732,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,452.80 : 869,752.80 = 487,214.40 : x
  2. Step 2: Convert to fraction form
    578,452.80/869,752.80 = 487,214.40/x
  3. Step 3: Cross multiply
    578,452.80x = 869,752.80 × 487,214.40
  4. Step 4: Simplify right side
    578,452.80x = 423,756,088,600.32
  5. Step 5: Solve for x
    x = 423,756,088,600.32/578,452.80
  6. Step 6: Final answer
    x = 732,568.13

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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.