Home / 687,875.13-949,262.22-377,774.19

Finding the Fourth Proportional to 687,875.13, 949,262.22 and 377,774.19

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Solution

The fourth proportional to 687,875.13, 949,262.22 and 377,774.19 is: 521,325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,875.13 : 949,262.22 = 377,774.19 : x
  2. Step 2: Convert to fraction form
    687,875.13/949,262.22 = 377,774.19/x
  3. Step 3: Cross multiply
    687,875.13x = 949,262.22 × 377,774.19
  4. Step 4: Simplify right side
    687,875.13x = 358,606,766,258.10
  5. Step 5: Solve for x
    x = 358,606,766,258.10/687,875.13
  6. Step 6: Final answer
    x = 521,325.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.