Home / 664,759,808,970.56-917,818,859,272.56-421,105,499,316.80

Finding the Fourth Proportional to 664,759,808,970.56, 917,818,859,272.56 and 421,105,499,316.80

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Solution

The fourth proportional to 664,759,808,970.56, 917,818,859,272.56 and 421,105,499,316.80 is: 581,410,855,170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,759,808,970.56 : 917,818,859,272.56 = 421,105,499,316.80 : x
  2. Step 2: Convert to fraction form
    664,759,808,970.56/917,818,859,272.56 = 421,105,499,316.80/x
  3. Step 3: Cross multiply
    664,759,808,970.56x = 917,818,859,272.56 × 421,105,499,316.80
  4. Step 4: Simplify right side
    664,759,808,970.56x = 386,498,569,016,347,199,537,152
  5. Step 5: Solve for x
    x = 386,498,569,016,347,199,537,152/664,759,808,970.56
  6. Step 6: Final answer
    x = 581,410,855,170.19

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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.