Home / 983,128.72-1,356,702.60-553,407.52

Finding the Fourth Proportional to 983,128.72, 1,356,702.60 and 553,407.52

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Solution

The fourth proportional to 983,128.72, 1,356,702.60 and 553,407.52 is: 763,693.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,128.72 : 1,356,702.60 = 553,407.52 : x
  2. Step 2: Convert to fraction form
    983,128.72/1,356,702.60 = 553,407.52/x
  3. Step 3: Cross multiply
    983,128.72x = 1,356,702.60 × 553,407.52
  4. Step 4: Simplify right side
    983,128.72x = 750,809,421,243.55
  5. Step 5: Solve for x
    x = 750,809,421,243.55/983,128.72
  6. Step 6: Final answer
    x = 763,693.92

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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.