Home / 910,236,783.72-1,256,128,945.03-492,553,551.00

Finding the Fourth Proportional to 910,236,783.72, 1,256,128,945.03 and 492,553,551.00

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Solution

The fourth proportional to 910,236,783.72, 1,256,128,945.03 and 492,553,551.00 is: 679,725,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,236,783.72 : 1,256,128,945.03 = 492,553,551.00 : x
  2. Step 2: Convert to fraction form
    910,236,783.72/1,256,128,945.03 = 492,553,551.00/x
  3. Step 3: Cross multiply
    910,236,783.72x = 1,256,128,945.03 × 492,553,551.00
  4. Step 4: Simplify right side
    910,236,783.72x = 618,710,772,380,898,176
  5. Step 5: Solve for x
    x = 618,710,772,380,898,176/910,236,783.72
  6. Step 6: Final answer
    x = 679,725,081.92

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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.