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Finding the Fourth Proportional to 668,877.20, 1,003,315.80 and 313,927.10

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Solution

The fourth proportional to 668,877.20, 1,003,315.80 and 313,927.10 is: 470,890.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,877.20 : 1,003,315.80 = 313,927.10 : x
  2. Step 2: Convert to fraction form
    668,877.20/1,003,315.80 = 313,927.10/x
  3. Step 3: Cross multiply
    668,877.20x = 1,003,315.80 × 313,927.10
  4. Step 4: Simplify right side
    668,877.20x = 314,968,019,478.18
  5. Step 5: Solve for x
    x = 314,968,019,478.18/668,877.20
  6. Step 6: Final answer
    x = 470,890.65

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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.