Home / 869,012.02-1,199,235-487,038.70

Finding the Fourth Proportional to 869,012.02, 1,199,235 and 487,038.70

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Solution

The fourth proportional to 869,012.02, 1,199,235 and 487,038.70 is: 672,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,012.02 : 1,199,235 = 487,038.70 : x
  2. Step 2: Convert to fraction form
    869,012.02/1,199,235 = 487,038.70/x
  3. Step 3: Cross multiply
    869,012.02x = 1,199,235 × 487,038.70
  4. Step 4: Simplify right side
    869,012.02x = 584,073,855,394.50
  5. Step 5: Solve for x
    x = 584,073,855,394.50/869,012.02
  6. Step 6: Final answer
    x = 672,112.52

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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.