Home / 679,501.40-1,018,085.70-442,722.20

Finding the Fourth Proportional to 679,501.40, 1,018,085.70 and 442,722.20

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Solution

The fourth proportional to 679,501.40, 1,018,085.70 and 442,722.20 is: 663,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,501.40 : 1,018,085.70 = 442,722.20 : x
  2. Step 2: Convert to fraction form
    679,501.40/1,018,085.70 = 442,722.20/x
  3. Step 3: Cross multiply
    679,501.40x = 1,018,085.70 × 442,722.20
  4. Step 4: Simplify right side
    679,501.40x = 450,729,140,892.54
  5. Step 5: Solve for x
    x = 450,729,140,892.54/679,501.40
  6. Step 6: Final answer
    x = 663,323.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.