Home / 879,289.25-1,213,419.30-497,307.83

Finding the Fourth Proportional to 879,289.25, 1,213,419.30 and 497,307.83

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Solution

The fourth proportional to 879,289.25, 1,213,419.30 and 497,307.83 is: 686,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,289.25 : 1,213,419.30 = 497,307.83 : x
  2. Step 2: Convert to fraction form
    879,289.25/1,213,419.30 = 497,307.83/x
  3. Step 3: Cross multiply
    879,289.25x = 1,213,419.30 × 497,307.83
  4. Step 4: Simplify right side
    879,289.25x = 603,442,918,963.12
  5. Step 5: Solve for x
    x = 603,442,918,963.12/879,289.25
  6. Step 6: Final answer
    x = 686,284.88

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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.