Home / 671,334.70-1,007,002.05-387,510.70

Finding the Fourth Proportional to 671,334.70, 1,007,002.05 and 387,510.70

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Solution

The fourth proportional to 671,334.70, 1,007,002.05 and 387,510.70 is: 581,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,334.70 : 1,007,002.05 = 387,510.70 : x
  2. Step 2: Convert to fraction form
    671,334.70/1,007,002.05 = 387,510.70/x
  3. Step 3: Cross multiply
    671,334.70x = 1,007,002.05 × 387,510.70
  4. Step 4: Simplify right side
    671,334.70x = 390,224,069,296.94
  5. Step 5: Solve for x
    x = 390,224,069,296.94/671,334.70
  6. Step 6: Final answer
    x = 581,266.05

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Double scale
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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.