Home / 897,903.40-1,239,132.81-490,031.47

Finding the Fourth Proportional to 897,903.40, 1,239,132.81 and 490,031.47

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Solution

The fourth proportional to 897,903.40, 1,239,132.81 and 490,031.47 is: 676,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,903.40 : 1,239,132.81 = 490,031.47 : x
  2. Step 2: Convert to fraction form
    897,903.40/1,239,132.81 = 490,031.47/x
  3. Step 3: Cross multiply
    897,903.40x = 1,239,132.81 × 490,031.47
  4. Step 4: Simplify right side
    897,903.40x = 607,214,069,959.37
  5. Step 5: Solve for x
    x = 607,214,069,959.37/897,903.40
  6. Step 6: Final answer
    x = 676,257.68

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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.