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Finding the Fourth Proportional to 684,071.68, 944,282.88 and 612,325.12

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Solution

The fourth proportional to 684,071.68, 944,282.88 and 612,325.12 is: 845,244.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,071.68 : 944,282.88 = 612,325.12 : x
  2. Step 2: Convert to fraction form
    684,071.68/944,282.88 = 612,325.12/x
  3. Step 3: Cross multiply
    684,071.68x = 944,282.88 × 612,325.12
  4. Step 4: Simplify right side
    684,071.68x = 578,208,127,809.95
  5. Step 5: Solve for x
    x = 578,208,127,809.95/684,071.68
  6. Step 6: Final answer
    x = 845,244.94

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Double scale
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Similar ratio
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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.