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Finding the Fourth Proportional to 610,628,992.80, 916,330,893.59 and 260,877,695.81

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Solution

The fourth proportional to 610,628,992.80, 916,330,893.59 and 260,877,695.81 is: 391,482,053.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,628,992.80 : 916,330,893.59 = 260,877,695.81 : x
  2. Step 2: Convert to fraction form
    610,628,992.80/916,330,893.59 = 260,877,695.81/x
  3. Step 3: Cross multiply
    610,628,992.80x = 916,330,893.59 × 260,877,695.81
  4. Step 4: Simplify right side
    610,628,992.80x = 239,050,292,113,391,488
  5. Step 5: Solve for x
    x = 239,050,292,113,391,488/610,628,992.80
  6. Step 6: Final answer
    x = 391,482,053.64

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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.