Home / 870,678.48-1,201,470.40-488,631.44

Finding the Fourth Proportional to 870,678.48, 1,201,470.40 and 488,631.44

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Solution

The fourth proportional to 870,678.48, 1,201,470.40 and 488,631.44 is: 674,274.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,678.48 : 1,201,470.40 = 488,631.44 : x
  2. Step 2: Convert to fraction form
    870,678.48/1,201,470.40 = 488,631.44/x
  3. Step 3: Cross multiply
    870,678.48x = 1,201,470.40 × 488,631.44
  4. Step 4: Simplify right side
    870,678.48x = 587,076,211,669.38
  5. Step 5: Solve for x
    x = 587,076,211,669.38/870,678.48
  6. Step 6: Final answer
    x = 674,274.40

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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.