Home / 918,876,314.61-1,268,156,518.11-522,458,701.71

Finding the Fourth Proportional to 918,876,314.61, 1,268,156,518.11 and 522,458,701.71

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Solution

The fourth proportional to 918,876,314.61, 1,268,156,518.11 and 522,458,701.71 is: 721,053,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,876,314.61 : 1,268,156,518.11 = 522,458,701.71 : x
  2. Step 2: Convert to fraction form
    918,876,314.61/1,268,156,518.11 = 522,458,701.71/x
  3. Step 3: Cross multiply
    918,876,314.61x = 1,268,156,518.11 × 522,458,701.71
  4. Step 4: Simplify right side
    918,876,314.61x = 662,559,408,016,824,576
  5. Step 5: Solve for x
    x = 662,559,408,016,824,576/918,876,314.61
  6. Step 6: Final answer
    x = 721,053,962.85

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Double scale
Find fourth proportional to 918,876,315.61, 1,268,156,519.49 and 522,458,702.71
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1.5x scale

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.