Home / 1,020,007.80-1,528,978.68-513,036.72

Finding the Fourth Proportional to 1,020,007.80, 1,528,978.68 and 513,036.72

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Solution

The fourth proportional to 1,020,007.80, 1,528,978.68 and 513,036.72 is: 769,035.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,007.80 : 1,528,978.68 = 513,036.72 : x
  2. Step 2: Convert to fraction form
    1,020,007.80/1,528,978.68 = 513,036.72/x
  3. Step 3: Cross multiply
    1,020,007.80x = 1,528,978.68 × 513,036.72
  4. Step 4: Simplify right side
    1,020,007.80x = 784,422,206,937.13
  5. Step 5: Solve for x
    x = 784,422,206,937.13/1,020,007.80
  6. Step 6: Final answer
    x = 769,035.50

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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.