Home / 515,402,292.42-711,249,184.80-280,448,904.78

Finding the Fourth Proportional to 515,402,292.42, 711,249,184.80 and 280,448,904.78

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Solution

The fourth proportional to 515,402,292.42, 711,249,184.80 and 280,448,904.78 is: 387,016,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,402,292.42 : 711,249,184.80 = 280,448,904.78 : x
  2. Step 2: Convert to fraction form
    515,402,292.42/711,249,184.80 = 280,448,904.78/x
  3. Step 3: Cross multiply
    515,402,292.42x = 711,249,184.80 × 280,448,904.78
  4. Step 4: Simplify right side
    515,402,292.42x = 199,469,054,902,827,776
  5. Step 5: Solve for x
    x = 199,469,054,902,827,776/515,402,292.42
  6. Step 6: Final answer
    x = 387,016,235.35

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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.