Home / 933,205,848.54-1,287,834,839.19-515,509,377.18

Finding the Fourth Proportional to 933,205,848.54, 1,287,834,839.19 and 515,509,377.18

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Solution

The fourth proportional to 933,205,848.54, 1,287,834,839.19 and 515,509,377.18 is: 711,408,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,205,848.54 : 1,287,834,839.19 = 515,509,377.18 : x
  2. Step 2: Convert to fraction form
    933,205,848.54/1,287,834,839.19 = 515,509,377.18/x
  3. Step 3: Cross multiply
    933,205,848.54x = 1,287,834,839.19 × 515,509,377.18
  4. Step 4: Simplify right side
    933,205,848.54x = 663,890,935,861,542,400
  5. Step 5: Solve for x
    x = 663,890,935,861,542,400/933,205,848.54
  6. Step 6: Final answer
    x = 711,408,888.94

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Double scale
Find fourth proportional to 933,205,849.54, 1,287,834,840.57 and 515,509,378.18
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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.