Home / 687,430.77-1,030,900.08-238,030.95

Finding the Fourth Proportional to 687,430.77, 1,030,900.08 and 238,030.95

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Solution

The fourth proportional to 687,430.77, 1,030,900.08 and 238,030.95 is: 356,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,430.77 : 1,030,900.08 = 238,030.95 : x
  2. Step 2: Convert to fraction form
    687,430.77/1,030,900.08 = 238,030.95/x
  3. Step 3: Cross multiply
    687,430.77x = 1,030,900.08 × 238,030.95
  4. Step 4: Simplify right side
    687,430.77x = 245,386,125,397.48
  5. Step 5: Solve for x
    x = 245,386,125,397.48/687,430.77
  6. Step 6: Final answer
    x = 356,961.22

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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.