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Finding the Fourth Proportional to 620,573,425.76, 856,397,927.04 and 342,124,913.82

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Solution

The fourth proportional to 620,573,425.76, 856,397,927.04 and 342,124,913.82 is: 472,136,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,573,425.76 : 856,397,927.04 = 342,124,913.82 : x
  2. Step 2: Convert to fraction form
    620,573,425.76/856,397,927.04 = 342,124,913.82/x
  3. Step 3: Cross multiply
    620,573,425.76x = 856,397,927.04 × 342,124,913.82
  4. Step 4: Simplify right side
    620,573,425.76x = 292,995,066,984,186,624
  5. Step 5: Solve for x
    x = 292,995,066,984,186,624/620,573,425.76
  6. Step 6: Final answer
    x = 472,136,019.40

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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.