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Finding the Fourth Proportional to 518,851.20, 776,721.60 and 456,643.20

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Solution

The fourth proportional to 518,851.20, 776,721.60 and 456,643.20 is: 683,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,851.20 : 776,721.60 = 456,643.20 : x
  2. Step 2: Convert to fraction form
    518,851.20/776,721.60 = 456,643.20/x
  3. Step 3: Cross multiply
    518,851.20x = 776,721.60 × 456,643.20
  4. Step 4: Simplify right side
    518,851.20x = 354,684,636,933.12
  5. Step 5: Solve for x
    x = 354,684,636,933.12/518,851.20
  6. Step 6: Final answer
    x = 683,596.06

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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.