Home / 674,830.40-1,011,079.20-438,051.20

Finding the Fourth Proportional to 674,830.40, 1,011,079.20 and 438,051.20

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Solution

The fourth proportional to 674,830.40, 1,011,079.20 and 438,051.20 is: 656,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,830.40 : 1,011,079.20 = 438,051.20 : x
  2. Step 2: Convert to fraction form
    674,830.40/1,011,079.20 = 438,051.20/x
  3. Step 3: Cross multiply
    674,830.40x = 1,011,079.20 × 438,051.20
  4. Step 4: Simplify right side
    674,830.40x = 442,904,456,855.04
  5. Step 5: Solve for x
    x = 442,904,456,855.04/674,830.40
  6. Step 6: Final answer
    x = 656,319.66

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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.