Home / 817,420.95-1,225,781.51-256,499.19

Finding the Fourth Proportional to 817,420.95, 1,225,781.51 and 256,499.19

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Solution

The fourth proportional to 817,420.95, 1,225,781.51 and 256,499.19 is: 384,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,420.95 : 1,225,781.51 = 256,499.19 : x
  2. Step 2: Convert to fraction form
    817,420.95/1,225,781.51 = 256,499.19/x
  3. Step 3: Cross multiply
    817,420.95x = 1,225,781.51 × 256,499.19
  4. Step 4: Simplify right side
    817,420.95x = 314,411,963,149.48
  5. Step 5: Solve for x
    x = 314,411,963,149.48/817,420.95
  6. Step 6: Final answer
    x = 384,638.98

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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.