Home / 912,420.63-1,368,826.56-272,774.43

Finding the Fourth Proportional to 912,420.63, 1,368,826.56 and 272,774.43

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Solution

The fourth proportional to 912,420.63, 1,368,826.56 and 272,774.43 is: 409,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,420.63 : 1,368,826.56 = 272,774.43 : x
  2. Step 2: Convert to fraction form
    912,420.63/1,368,826.56 = 272,774.43/x
  3. Step 3: Cross multiply
    912,420.63x = 1,368,826.56 × 272,774.43
  4. Step 4: Simplify right side
    912,420.63x = 373,380,884,672.86
  5. Step 5: Solve for x
    x = 373,380,884,672.86/912,420.63
  6. Step 6: Final answer
    x = 409,220.13

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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.