Home / 520,243,015,659.65-717,877,134,788.47-288,766,291,228.20

Finding the Fourth Proportional to 520,243,015,659.65, 717,877,134,788.47 and 288,766,291,228.20

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Solution

The fourth proportional to 520,243,015,659.65, 717,877,134,788.47 and 288,766,291,228.20 is: 398,465,162,492.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,659.65 : 717,877,134,788.47 = 288,766,291,228.20 : x
  2. Step 2: Convert to fraction form
    520,243,015,659.65/717,877,134,788.47 = 288,766,291,228.20/x
  3. Step 3: Cross multiply
    520,243,015,659.65x = 717,877,134,788.47 × 288,766,291,228.20
  4. Step 4: Simplify right side
    520,243,015,659.65x = 207,298,717,770,393,120,145,408
  5. Step 5: Solve for x
    x = 207,298,717,770,393,120,145,408/520,243,015,659.65
  6. Step 6: Final answer
    x = 398,465,162,492.47

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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.