Home / 1,020,880.80-1,531,904.40-390,247.20

Finding the Fourth Proportional to 1,020,880.80, 1,531,904.40 and 390,247.20

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Solution

The fourth proportional to 1,020,880.80, 1,531,904.40 and 390,247.20 is: 585,593.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,880.80 : 1,531,904.40 = 390,247.20 : x
  2. Step 2: Convert to fraction form
    1,020,880.80/1,531,904.40 = 390,247.20/x
  3. Step 3: Cross multiply
    1,020,880.80x = 1,531,904.40 × 390,247.20
  4. Step 4: Simplify right side
    1,020,880.80x = 597,821,402,767.68
  5. Step 5: Solve for x
    x = 597,821,402,767.68/1,020,880.80
  6. Step 6: Final answer
    x = 585,593.74

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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.