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Finding the Fourth Proportional to 660,012.80, 989,363.10 and 304,406.60

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Solution

The fourth proportional to 660,012.80, 989,363.10 and 304,406.60 is: 456,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,012.80 : 989,363.10 = 304,406.60 : x
  2. Step 2: Convert to fraction form
    660,012.80/989,363.10 = 304,406.60/x
  3. Step 3: Cross multiply
    660,012.80x = 989,363.10 × 304,406.60
  4. Step 4: Simplify right side
    660,012.80x = 301,168,657,436.46
  5. Step 5: Solve for x
    x = 301,168,657,436.46/660,012.80
  6. Step 6: Final answer
    x = 456,307.30

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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.