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Finding the Fourth Proportional to 485,714.74, 670,809.12 and 369,756.34

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Solution

The fourth proportional to 485,714.74, 670,809.12 and 369,756.34 is: 510,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,714.74 : 670,809.12 = 369,756.34 : x
  2. Step 2: Convert to fraction form
    485,714.74/670,809.12 = 369,756.34/x
  3. Step 3: Cross multiply
    485,714.74x = 670,809.12 × 369,756.34
  4. Step 4: Simplify right side
    485,714.74x = 248,035,925,049.82
  5. Step 5: Solve for x
    x = 248,035,925,049.82/485,714.74
  6. Step 6: Final answer
    x = 510,661.72

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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.