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Finding the Fourth Proportional to 576,721.80, 864,045.90 and 470,968.20

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Solution

The fourth proportional to 576,721.80, 864,045.90 and 470,968.20 is: 705,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,721.80 : 864,045.90 = 470,968.20 : x
  2. Step 2: Convert to fraction form
    576,721.80/864,045.90 = 470,968.20/x
  3. Step 3: Cross multiply
    576,721.80x = 864,045.90 × 470,968.20
  4. Step 4: Simplify right side
    576,721.80x = 406,938,142,240.38
  5. Step 5: Solve for x
    x = 406,938,142,240.38/576,721.80
  6. Step 6: Final answer
    x = 705,605.62

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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.