Home / 765,721.02-1,148,581.16-315,947.36

Finding the Fourth Proportional to 765,721.02, 1,148,581.16 and 315,947.36

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Solution

The fourth proportional to 765,721.02, 1,148,581.16 and 315,947.36 is: 473,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,721.02 : 1,148,581.16 = 315,947.36 : x
  2. Step 2: Convert to fraction form
    765,721.02/1,148,581.16 = 315,947.36/x
  3. Step 3: Cross multiply
    765,721.02x = 1,148,581.16 × 315,947.36
  4. Step 4: Simplify right side
    765,721.02x = 362,891,185,247.74
  5. Step 5: Solve for x
    x = 362,891,185,247.74/765,721.02
  6. Step 6: Final answer
    x = 473,920.89

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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.