Home / 985,398.48-1,360,219.68-645,888.60

Finding the Fourth Proportional to 985,398.48, 1,360,219.68 and 645,888.60

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Solution

The fourth proportional to 985,398.48, 1,360,219.68 and 645,888.60 is: 891,568.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,398.48 : 1,360,219.68 = 645,888.60 : x
  2. Step 2: Convert to fraction form
    985,398.48/1,360,219.68 = 645,888.60/x
  3. Step 3: Cross multiply
    985,398.48x = 1,360,219.68 × 645,888.60
  4. Step 4: Simplify right side
    985,398.48x = 878,550,384,807.65
  5. Step 5: Solve for x
    x = 878,550,384,807.65/985,398.48
  6. Step 6: Final answer
    x = 891,568.64

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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.