Home / 520,243,015,657.40-717,877,134,785.40-288,766,291,225.95

Finding the Fourth Proportional to 520,243,015,657.40, 717,877,134,785.40 and 288,766,291,225.95

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Solution

The fourth proportional to 520,243,015,657.40, 717,877,134,785.40 and 288,766,291,225.95 is: 398,465,162,489.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,657.40 : 717,877,134,785.40 = 288,766,291,225.95 : x
  2. Step 2: Convert to fraction form
    520,243,015,657.40/717,877,134,785.40 = 288,766,291,225.95/x
  3. Step 3: Cross multiply
    520,243,015,657.40x = 717,877,134,785.40 × 288,766,291,225.95
  4. Step 4: Simplify right side
    520,243,015,657.40x = 207,298,717,767,891,402,358,784
  5. Step 5: Solve for x
    x = 207,298,717,767,891,402,358,784/520,243,015,657.40
  6. Step 6: Final answer
    x = 398,465,162,489.38

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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.