Home / 520,261,030.80-717,894,235.08-285,249,849.12

Finding the Fourth Proportional to 520,261,030.80, 717,894,235.08 and 285,249,849.12

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Solution

The fourth proportional to 520,261,030.80, 717,894,235.08 and 285,249,849.12 is: 393,608,612.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,261,030.80 : 717,894,235.08 = 285,249,849.12 : x
  2. Step 2: Convert to fraction form
    520,261,030.80/717,894,235.08 = 285,249,849.12/x
  3. Step 3: Cross multiply
    520,261,030.80x = 717,894,235.08 × 285,249,849.12
  4. Step 4: Simplify right side
    520,261,030.80x = 204,779,222,240,687,840
  5. Step 5: Solve for x
    x = 204,779,222,240,687,840/520,261,030.80
  6. Step 6: Final answer
    x = 393,608,612.06

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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.