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Finding the Fourth Proportional to 977,442.80, 1,465,726.80 and 378,204.80

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Solution

The fourth proportional to 977,442.80, 1,465,726.80 and 378,204.80 is: 567,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,442.80 : 1,465,726.80 = 378,204.80 : x
  2. Step 2: Convert to fraction form
    977,442.80/1,465,726.80 = 378,204.80/x
  3. Step 3: Cross multiply
    977,442.80x = 1,465,726.80 × 378,204.80
  4. Step 4: Simplify right side
    977,442.80x = 554,344,911,248.64
  5. Step 5: Solve for x
    x = 554,344,911,248.64/977,442.80
  6. Step 6: Final answer
    x = 567,137.96

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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.