Home / 870,656.40-1,305,984.60-239,569.20

Finding the Fourth Proportional to 870,656.40, 1,305,984.60 and 239,569.20

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Solution

The fourth proportional to 870,656.40, 1,305,984.60 and 239,569.20 is: 359,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,656.40 : 1,305,984.60 = 239,569.20 : x
  2. Step 2: Convert to fraction form
    870,656.40/1,305,984.60 = 239,569.20/x
  3. Step 3: Cross multiply
    870,656.40x = 1,305,984.60 × 239,569.20
  4. Step 4: Simplify right side
    870,656.40x = 312,873,685,834.32
  5. Step 5: Solve for x
    x = 312,873,685,834.32/870,656.40
  6. Step 6: Final answer
    x = 359,353.80

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1.5x scale

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.