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Finding the Fourth Proportional to 870,386.42, 1,304,035.06 and 363,830.76

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Solution

The fourth proportional to 870,386.42, 1,304,035.06 and 363,830.76 is: 545,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,386.42 : 1,304,035.06 = 363,830.76 : x
  2. Step 2: Convert to fraction form
    870,386.42/1,304,035.06 = 363,830.76/x
  3. Step 3: Cross multiply
    870,386.42x = 1,304,035.06 × 363,830.76
  4. Step 4: Simplify right side
    870,386.42x = 474,448,066,946.45
  5. Step 5: Solve for x
    x = 474,448,066,946.45/870,386.42
  6. Step 6: Final answer
    x = 545,100.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.