Home / 836,980.64-1,155,040.80-455,008.16

Finding the Fourth Proportional to 836,980.64, 1,155,040.80 and 455,008.16

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Solution

The fourth proportional to 836,980.64, 1,155,040.80 and 455,008.16 is: 627,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,980.64 : 1,155,040.80 = 455,008.16 : x
  2. Step 2: Convert to fraction form
    836,980.64/1,155,040.80 = 455,008.16/x
  3. Step 3: Cross multiply
    836,980.64x = 1,155,040.80 × 455,008.16
  4. Step 4: Simplify right side
    836,980.64x = 525,552,989,132.93
  5. Step 5: Solve for x
    x = 525,552,989,132.93/836,980.64
  6. Step 6: Final answer
    x = 627,915.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.