Home / 431,128,373.11-646,746,341.45-168,779,035.90

Finding the Fourth Proportional to 431,128,373.11, 646,746,341.45 and 168,779,035.90

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Solution

The fourth proportional to 431,128,373.11, 646,746,341.45 and 168,779,035.90 is: 253,189,608.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,128,373.11 : 646,746,341.45 = 168,779,035.90 : x
  2. Step 2: Convert to fraction form
    431,128,373.11/646,746,341.45 = 168,779,035.90/x
  3. Step 3: Cross multiply
    431,128,373.11x = 646,746,341.45 × 168,779,035.90
  4. Step 4: Simplify right side
    431,128,373.11x = 109,157,223,981,783,216
  5. Step 5: Solve for x
    x = 109,157,223,981,783,216/431,128,373.11
  6. Step 6: Final answer
    x = 253,189,608.46

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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.