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Finding the Fourth Proportional to 578,740.80, 870,184.80 and 487,502.40

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Solution

The fourth proportional to 578,740.80, 870,184.80 and 487,502.40 is: 733,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,740.80 : 870,184.80 = 487,502.40 : x
  2. Step 2: Convert to fraction form
    578,740.80/870,184.80 = 487,502.40/x
  3. Step 3: Cross multiply
    578,740.80x = 870,184.80 × 487,502.40
  4. Step 4: Simplify right side
    578,740.80x = 424,217,178,443.52
  5. Step 5: Solve for x
    x = 424,217,178,443.52/578,740.80
  6. Step 6: Final answer
    x = 733,000.30

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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.