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Finding the Fourth Proportional to 651,445.60, 977,398.80 and 628,405.60

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Solution

The fourth proportional to 651,445.60, 977,398.80 and 628,405.60 is: 942,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,445.60 : 977,398.80 = 628,405.60 : x
  2. Step 2: Convert to fraction form
    651,445.60/977,398.80 = 628,405.60/x
  3. Step 3: Cross multiply
    651,445.60x = 977,398.80 × 628,405.60
  4. Step 4: Simplify right side
    651,445.60x = 614,202,879,353.28
  5. Step 5: Solve for x
    x = 614,202,879,353.28/651,445.60
  6. Step 6: Final answer
    x = 942,830.65

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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.