Home / 1,032,407.78-1,425,240.76-645,438.20

Finding the Fourth Proportional to 1,032,407.78, 1,425,240.76 and 645,438.20

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Solution

The fourth proportional to 1,032,407.78, 1,425,240.76 and 645,438.20 is: 891,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032,407.78 : 1,425,240.76 = 645,438.20 : x
  2. Step 2: Convert to fraction form
    1,032,407.78/1,425,240.76 = 645,438.20/x
  3. Step 3: Cross multiply
    1,032,407.78x = 1,425,240.76 × 645,438.20
  4. Step 4: Simplify right side
    1,032,407.78x = 919,904,830,701.03
  5. Step 5: Solve for x
    x = 919,904,830,701.03/1,032,407.78
  6. Step 6: Final answer
    x = 891,028.57

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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.