Home / 910,420.80-1,365,631.20-626,985.60

Finding the Fourth Proportional to 910,420.80, 1,365,631.20 and 626,985.60

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Solution

The fourth proportional to 910,420.80, 1,365,631.20 and 626,985.60 is: 940,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,420.80 : 1,365,631.20 = 626,985.60 : x
  2. Step 2: Convert to fraction form
    910,420.80/1,365,631.20 = 626,985.60/x
  3. Step 3: Cross multiply
    910,420.80x = 1,365,631.20 × 626,985.60
  4. Step 4: Simplify right side
    910,420.80x = 856,231,097,310.72
  5. Step 5: Solve for x
    x = 856,231,097,310.72/910,420.80
  6. Step 6: Final answer
    x = 940,478.40

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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.