Home / 1,007,199,287.40-1,510,798,931.10-280,187,999.40

Finding the Fourth Proportional to 1,007,199,287.40, 1,510,798,931.10 and 280,187,999.40

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Solution

The fourth proportional to 1,007,199,287.40, 1,510,798,931.10 and 280,187,999.40 is: 420,281,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,199,287.40 : 1,510,798,931.10 = 280,187,999.40 : x
  2. Step 2: Convert to fraction form
    1,007,199,287.40/1,510,798,931.10 = 280,187,999.40/x
  3. Step 3: Cross multiply
    1,007,199,287.40x = 1,510,798,931.10 × 280,187,999.40
  4. Step 4: Simplify right side
    1,007,199,287.40x = 423,307,730,000,567,360
  5. Step 5: Solve for x
    x = 423,307,730,000,567,360/1,007,199,287.40
  6. Step 6: Final answer
    x = 420,281,999.10

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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.