Home / 1,012,387.68-1,518,006.42-412,646.40

Finding the Fourth Proportional to 1,012,387.68, 1,518,006.42 and 412,646.40

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Solution

The fourth proportional to 1,012,387.68, 1,518,006.42 and 412,646.40 is: 618,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,387.68 : 1,518,006.42 = 412,646.40 : x
  2. Step 2: Convert to fraction form
    1,012,387.68/1,518,006.42 = 412,646.40/x
  3. Step 3: Cross multiply
    1,012,387.68x = 1,518,006.42 × 412,646.40
  4. Step 4: Simplify right side
    1,012,387.68x = 626,399,884,389.89
  5. Step 5: Solve for x
    x = 626,399,884,389.89/1,012,387.68
  6. Step 6: Final answer
    x = 618,735.19

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1.5x scale

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.