Home / 431,128,374.11-646,746,342.95-168,779,036.90

Finding the Fourth Proportional to 431,128,374.11, 646,746,342.95 and 168,779,036.90

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Solution

The fourth proportional to 431,128,374.11, 646,746,342.95 and 168,779,036.90 is: 253,189,609.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,128,374.11 : 646,746,342.95 = 168,779,036.90 : x
  2. Step 2: Convert to fraction form
    431,128,374.11/646,746,342.95 = 168,779,036.90/x
  3. Step 3: Cross multiply
    431,128,374.11x = 646,746,342.95 × 168,779,036.90
  4. Step 4: Simplify right side
    431,128,374.11x = 109,157,224,881,698,112
  5. Step 5: Solve for x
    x = 109,157,224,881,698,112/431,128,374.11
  6. Step 6: Final answer
    x = 253,189,609.96

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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.