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Finding the Fourth Proportional to 586,914.58, 810,701.88 and 485,350.30

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Solution

The fourth proportional to 586,914.58, 810,701.88 and 485,350.30 is: 670,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,914.58 : 810,701.88 = 485,350.30 : x
  2. Step 2: Convert to fraction form
    586,914.58/810,701.88 = 485,350.30/x
  3. Step 3: Cross multiply
    586,914.58x = 810,701.88 × 485,350.30
  4. Step 4: Simplify right side
    586,914.58x = 393,474,398,641.81
  5. Step 5: Solve for x
    x = 393,474,398,641.81/586,914.58
  6. Step 6: Final answer
    x = 670,411.70

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Double scale
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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.