Home / 912,151.40-1,368,356.70-280,999.40

Finding the Fourth Proportional to 912,151.40, 1,368,356.70 and 280,999.40

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Solution

The fourth proportional to 912,151.40, 1,368,356.70 and 280,999.40 is: 421,539.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,151.40 : 1,368,356.70 = 280,999.40 : x
  2. Step 2: Convert to fraction form
    912,151.40/1,368,356.70 = 280,999.40/x
  3. Step 3: Cross multiply
    912,151.40x = 1,368,356.70 × 280,999.40
  4. Step 4: Simplify right side
    912,151.40x = 384,507,411,685.98
  5. Step 5: Solve for x
    x = 384,507,411,685.98/912,151.40
  6. Step 6: Final answer
    x = 421,539.02

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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.