Home / 712,921.74-1,069,517.48-286,490.76

Finding the Fourth Proportional to 712,921.74, 1,069,517.48 and 286,490.76

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Solution

The fourth proportional to 712,921.74, 1,069,517.48 and 286,490.76 is: 429,790.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,921.74 : 1,069,517.48 = 286,490.76 : x
  2. Step 2: Convert to fraction form
    712,921.74/1,069,517.48 = 286,490.76/x
  3. Step 3: Cross multiply
    712,921.74x = 1,069,517.48 × 286,490.76
  4. Step 4: Simplify right side
    712,921.74x = 306,406,875,678.49
  5. Step 5: Solve for x
    x = 306,406,875,678.49/712,921.74
  6. Step 6: Final answer
    x = 429,790.34

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Double scale
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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.