Home / 780,686.90-1,077,288.59-474,721.04

Finding the Fourth Proportional to 780,686.90, 1,077,288.59 and 474,721.04

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Solution

The fourth proportional to 780,686.90, 1,077,288.59 and 474,721.04 is: 655,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,686.90 : 1,077,288.59 = 474,721.04 : x
  2. Step 2: Convert to fraction form
    780,686.90/1,077,288.59 = 474,721.04/x
  3. Step 3: Cross multiply
    780,686.90x = 1,077,288.59 × 474,721.04
  4. Step 4: Simplify right side
    780,686.90x = 511,411,552,064.89
  5. Step 5: Solve for x
    x = 511,411,552,064.89/780,686.90
  6. Step 6: Final answer
    x = 655,078.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.