Home / 518,012,036,271.25-714,808,637,019.34-286,520,573,218.68

Finding the Fourth Proportional to 518,012,036,271.25, 714,808,637,019.34 and 286,520,573,218.68

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Solution

The fourth proportional to 518,012,036,271.25, 714,808,637,019.34 and 286,520,573,218.68 is: 395,371,856,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,012,036,271.25 : 714,808,637,019.34 = 286,520,573,218.68 : x
  2. Step 2: Convert to fraction form
    518,012,036,271.25/714,808,637,019.34 = 286,520,573,218.68/x
  3. Step 3: Cross multiply
    518,012,036,271.25x = 714,808,637,019.34 × 286,520,573,218.68
  4. Step 4: Simplify right side
    518,012,036,271.25x = 204,807,380,420,444,643,393,536
  5. Step 5: Solve for x
    x = 204,807,380,420,444,643,393,536/518,012,036,271.25
  6. Step 6: Final answer
    x = 395,371,856,404.51

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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.