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Finding the Fourth Proportional to 578,404.80, 869,680.80 and 487,166.40

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Solution

The fourth proportional to 578,404.80, 869,680.80 and 487,166.40 is: 732,496.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,404.80 : 869,680.80 = 487,166.40 : x
  2. Step 2: Convert to fraction form
    578,404.80/869,680.80 = 487,166.40/x
  3. Step 3: Cross multiply
    578,404.80x = 869,680.80 × 487,166.40
  4. Step 4: Simplify right side
    578,404.80x = 423,679,264,485.12
  5. Step 5: Solve for x
    x = 423,679,264,485.12/578,404.80
  6. Step 6: Final answer
    x = 732,496.11

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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.