Home / 987,641.10-1,480,574.70-389,010.60

Finding the Fourth Proportional to 987,641.10, 1,480,574.70 and 389,010.60

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Solution

The fourth proportional to 987,641.10, 1,480,574.70 and 389,010.60 is: 583,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,641.10 : 1,480,574.70 = 389,010.60 : x
  2. Step 2: Convert to fraction form
    987,641.10/1,480,574.70 = 389,010.60/x
  3. Step 3: Cross multiply
    987,641.10x = 1,480,574.70 × 389,010.60
  4. Step 4: Simplify right side
    987,641.10x = 575,959,252,391.82
  5. Step 5: Solve for x
    x = 575,959,252,391.82/987,641.10
  6. Step 6: Final answer
    x = 583,166.55

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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.