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Finding the Fourth Proportional to 520,303.80, 780,612.90 and 246,959.79

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Solution

The fourth proportional to 520,303.80, 780,612.90 and 246,959.79 is: 370,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,303.80 : 780,612.90 = 246,959.79 : x
  2. Step 2: Convert to fraction form
    520,303.80/780,612.90 = 246,959.79/x
  3. Step 3: Cross multiply
    520,303.80x = 780,612.90 × 246,959.79
  4. Step 4: Simplify right side
    520,303.80x = 192,779,994,001.89
  5. Step 5: Solve for x
    x = 192,779,994,001.89/520,303.80
  6. Step 6: Final answer
    x = 370,514.29

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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.