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Finding the Fourth Proportional to 870,503.81, 1,201,332.78 and 483,319.25

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Solution

The fourth proportional to 870,503.81, 1,201,332.78 and 483,319.25 is: 667,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,503.81 : 1,201,332.78 = 483,319.25 : x
  2. Step 2: Convert to fraction form
    870,503.81/1,201,332.78 = 483,319.25/x
  3. Step 3: Cross multiply
    870,503.81x = 1,201,332.78 × 483,319.25
  4. Step 4: Simplify right side
    870,503.81x = 580,627,255,369.01
  5. Step 5: Solve for x
    x = 580,627,255,369.01/870,503.81
  6. Step 6: Final answer
    x = 667,001.39

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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.