Home / 1,020,431.80-1,531,230.90-389,798.20

Finding the Fourth Proportional to 1,020,431.80, 1,531,230.90 and 389,798.20

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Solution

The fourth proportional to 1,020,431.80, 1,531,230.90 and 389,798.20 is: 584,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,431.80 : 1,531,230.90 = 389,798.20 : x
  2. Step 2: Convert to fraction form
    1,020,431.80/1,531,230.90 = 389,798.20/x
  3. Step 3: Cross multiply
    1,020,431.80x = 1,531,230.90 × 389,798.20
  4. Step 4: Simplify right side
    1,020,431.80x = 596,871,048,604.38
  5. Step 5: Solve for x
    x = 596,871,048,604.38/1,020,431.80
  6. Step 6: Final answer
    x = 584,920.08

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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.