Home / 910,236,786.59-1,256,128,949-492,553,553.87

Finding the Fourth Proportional to 910,236,786.59, 1,256,128,949 and 492,553,553.87

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Solution

The fourth proportional to 910,236,786.59, 1,256,128,949 and 492,553,553.87 is: 679,725,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,236,786.59 : 1,256,128,949 = 492,553,553.87 : x
  2. Step 2: Convert to fraction form
    910,236,786.59/1,256,128,949 = 492,553,553.87/x
  3. Step 3: Cross multiply
    910,236,786.59x = 1,256,128,949 × 492,553,553.87
  4. Step 4: Simplify right side
    910,236,786.59x = 618,710,777,948,937,984
  5. Step 5: Solve for x
    x = 618,710,777,948,937,984/910,236,786.59
  6. Step 6: Final answer
    x = 679,725,085.89

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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.