Home / 897,905.40-1,239,135.56-490,033.47

Finding the Fourth Proportional to 897,905.40, 1,239,135.56 and 490,033.47

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Solution

The fourth proportional to 897,905.40, 1,239,135.56 and 490,033.47 is: 676,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,905.40 : 1,239,135.56 = 490,033.47 : x
  2. Step 2: Convert to fraction form
    897,905.40/1,239,135.56 = 490,033.47/x
  3. Step 3: Cross multiply
    897,905.40x = 1,239,135.56 × 490,033.47
  4. Step 4: Simplify right side
    897,905.40x = 607,217,898,267.19
  5. Step 5: Solve for x
    x = 607,217,898,267.19/897,905.40
  6. Step 6: Final answer
    x = 676,260.44

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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.