Home / 898,130.31-1,239,456.38-490,259.67

Finding the Fourth Proportional to 898,130.31, 1,239,456.38 and 490,259.67

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Solution

The fourth proportional to 898,130.31, 1,239,456.38 and 490,259.67 is: 676,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,130.31 : 1,239,456.38 = 490,259.67 : x
  2. Step 2: Convert to fraction form
    898,130.31/1,239,456.38 = 490,259.67/x
  3. Step 3: Cross multiply
    898,130.31x = 1,239,456.38 × 490,259.67
  4. Step 4: Simplify right side
    898,130.31x = 607,655,473,386.90
  5. Step 5: Solve for x
    x = 607,655,473,386.90/898,130.31
  6. Step 6: Final answer
    x = 676,578.29

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Half scale
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Double scale
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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.