Home / 859,927.34-1,187,021.82-645,686.40

Finding the Fourth Proportional to 859,927.34, 1,187,021.82 and 645,686.40

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Solution

The fourth proportional to 859,927.34, 1,187,021.82 and 645,686.40 is: 891,289.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,927.34 : 1,187,021.82 = 645,686.40 : x
  2. Step 2: Convert to fraction form
    859,927.34/1,187,021.82 = 645,686.40/x
  3. Step 3: Cross multiply
    859,927.34x = 1,187,021.82 × 645,686.40
  4. Step 4: Simplify right side
    859,927.34x = 766,443,845,677.25
  5. Step 5: Solve for x
    x = 766,443,845,677.25/859,927.34
  6. Step 6: Final answer
    x = 891,289.08

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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.