Home / 386,547.17-579,875.45-120,334.59

Finding the Fourth Proportional to 386,547.17, 579,875.45 and 120,334.59

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Solution

The fourth proportional to 386,547.17, 579,875.45 and 120,334.59 is: 180,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,547.17 : 579,875.45 = 120,334.59 : x
  2. Step 2: Convert to fraction form
    386,547.17/579,875.45 = 120,334.59/x
  3. Step 3: Cross multiply
    386,547.17x = 579,875.45 × 120,334.59
  4. Step 4: Simplify right side
    386,547.17x = 69,779,073,925.14
  5. Step 5: Solve for x
    x = 69,779,073,925.14/386,547.17
  6. Step 6: Final answer
    x = 180,518.91

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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.