Home / 870,431.28-1,201,281.48-488,459.58

Finding the Fourth Proportional to 870,431.28, 1,201,281.48 and 488,459.58

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Solution

The fourth proportional to 870,431.28, 1,201,281.48 and 488,459.58 is: 674,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,431.28 : 1,201,281.48 = 488,459.58 : x
  2. Step 2: Convert to fraction form
    870,431.28/1,201,281.48 = 488,459.58/x
  3. Step 3: Cross multiply
    870,431.28x = 1,201,281.48 × 488,459.58
  4. Step 4: Simplify right side
    870,431.28x = 586,777,447,182.58
  5. Step 5: Solve for x
    x = 586,777,447,182.58/870,431.28
  6. Step 6: Final answer
    x = 674,122.66

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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.