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Finding the Fourth Proportional to 777,459.12, 1,072,869.48 and 437,920.08

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Solution

The fourth proportional to 777,459.12, 1,072,869.48 and 437,920.08 is: 604,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,459.12 : 1,072,869.48 = 437,920.08 : x
  2. Step 2: Convert to fraction form
    777,459.12/1,072,869.48 = 437,920.08/x
  3. Step 3: Cross multiply
    777,459.12x = 1,072,869.48 × 437,920.08
  4. Step 4: Simplify right side
    777,459.12x = 469,831,088,511.16
  5. Step 5: Solve for x
    x = 469,831,088,511.16/777,459.12
  6. Step 6: Final answer
    x = 604,316.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.