Home / 679,987.40-1,019,981.10-306,739.40

Finding the Fourth Proportional to 679,987.40, 1,019,981.10 and 306,739.40

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Solution

The fourth proportional to 679,987.40, 1,019,981.10 and 306,739.40 is: 460,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,987.40 : 1,019,981.10 = 306,739.40 : x
  2. Step 2: Convert to fraction form
    679,987.40/1,019,981.10 = 306,739.40/x
  3. Step 3: Cross multiply
    679,987.40x = 1,019,981.10 × 306,739.40
  4. Step 4: Simplify right side
    679,987.40x = 312,868,390,625.34
  5. Step 5: Solve for x
    x = 312,868,390,625.34/679,987.40
  6. Step 6: Final answer
    x = 460,109.10

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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.