Home / 647,354,110.65-971,031,165.98-642,819,147.45

Finding the Fourth Proportional to 647,354,110.65, 971,031,165.98 and 642,819,147.45

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Solution

The fourth proportional to 647,354,110.65, 971,031,165.98 and 642,819,147.45 is: 964,228,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,354,110.65 : 971,031,165.98 = 642,819,147.45 : x
  2. Step 2: Convert to fraction form
    647,354,110.65/971,031,165.98 = 642,819,147.45/x
  3. Step 3: Cross multiply
    647,354,110.65x = 971,031,165.98 × 642,819,147.45
  4. Step 4: Simplify right side
    647,354,110.65x = 624,197,426,259,428,992
  5. Step 5: Solve for x
    x = 624,197,426,259,428,992/647,354,110.65
  6. Step 6: Final answer
    x = 964,228,721.18

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.