Home / 991,701.60-1,488,934.80-618,453.60

Finding the Fourth Proportional to 991,701.60, 1,488,934.80 and 618,453.60

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Solution

The fourth proportional to 991,701.60, 1,488,934.80 and 618,453.60 is: 928,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,701.60 : 1,488,934.80 = 618,453.60 : x
  2. Step 2: Convert to fraction form
    991,701.60/1,488,934.80 = 618,453.60/x
  3. Step 3: Cross multiply
    991,701.60x = 1,488,934.80 × 618,453.60
  4. Step 4: Simplify right side
    991,701.60x = 920,837,087,225.28
  5. Step 5: Solve for x
    x = 920,837,087,225.28/991,701.60
  6. Step 6: Final answer
    x = 928,542.50

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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.