Home / 431,356,842.80-647,035,264.20-286,238,020.40

Finding the Fourth Proportional to 431,356,842.80, 647,035,264.20 and 286,238,020.40

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Solution

The fourth proportional to 431,356,842.80, 647,035,264.20 and 286,238,020.40 is: 429,357,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,356,842.80 : 647,035,264.20 = 286,238,020.40 : x
  2. Step 2: Convert to fraction form
    431,356,842.80/647,035,264.20 = 286,238,020.40/x
  3. Step 3: Cross multiply
    431,356,842.80x = 647,035,264.20 × 286,238,020.40
  4. Step 4: Simplify right side
    431,356,842.80x = 185,206,093,153,598,976
  5. Step 5: Solve for x
    x = 185,206,093,153,598,976/431,356,842.80
  6. Step 6: Final answer
    x = 429,357,030.60

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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.