Home / 679,570.12-1,019,219.10-645,848.20

Finding the Fourth Proportional to 679,570.12, 1,019,219.10 and 645,848.20

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Solution

The fourth proportional to 679,570.12, 1,019,219.10 and 645,848.20 is: 968,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,570.12 : 1,019,219.10 = 645,848.20 : x
  2. Step 2: Convert to fraction form
    679,570.12/1,019,219.10 = 645,848.20/x
  3. Step 3: Cross multiply
    679,570.12x = 1,019,219.10 × 645,848.20
  4. Step 4: Simplify right side
    679,570.12x = 658,260,821,140.62
  5. Step 5: Solve for x
    x = 658,260,821,140.62/679,570.12
  6. Step 6: Final answer
    x = 968,642.97

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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.