Home / 1,020,679.80-1,531,602.90-390,046.20

Finding the Fourth Proportional to 1,020,679.80, 1,531,602.90 and 390,046.20

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Solution

The fourth proportional to 1,020,679.80, 1,531,602.90 and 390,046.20 is: 585,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,679.80 : 1,531,602.90 = 390,046.20 : x
  2. Step 2: Convert to fraction form
    1,020,679.80/1,531,602.90 = 390,046.20/x
  3. Step 3: Cross multiply
    1,020,679.80x = 1,531,602.90 × 390,046.20
  4. Step 4: Simplify right side
    1,020,679.80x = 597,395,891,053.98
  5. Step 5: Solve for x
    x = 597,395,891,053.98/1,020,679.80
  6. Step 6: Final answer
    x = 585,292.17

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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.