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Finding the Fourth Proportional to 456,437.60, 684,656.40 and 453,813.20

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Solution

The fourth proportional to 456,437.60, 684,656.40 and 453,813.20 is: 680,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,437.60 : 684,656.40 = 453,813.20 : x
  2. Step 2: Convert to fraction form
    456,437.60/684,656.40 = 453,813.20/x
  3. Step 3: Cross multiply
    456,437.60x = 684,656.40 × 453,813.20
  4. Step 4: Simplify right side
    456,437.60x = 310,706,111,784.48
  5. Step 5: Solve for x
    x = 310,706,111,784.48/456,437.60
  6. Step 6: Final answer
    x = 680,719.80

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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.