Home / 559,631.80-839,447.70-307,689.40

Finding the Fourth Proportional to 559,631.80, 839,447.70 and 307,689.40

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Solution

The fourth proportional to 559,631.80, 839,447.70 and 307,689.40 is: 461,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,631.80 : 839,447.70 = 307,689.40 : x
  2. Step 2: Convert to fraction form
    559,631.80/839,447.70 = 307,689.40/x
  3. Step 3: Cross multiply
    559,631.80x = 839,447.70 × 307,689.40
  4. Step 4: Simplify right side
    559,631.80x = 258,289,159,144.38
  5. Step 5: Solve for x
    x = 258,289,159,144.38/559,631.80
  6. Step 6: Final answer
    x = 461,534.10

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Similar ratio
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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.