Home / 917,001,088.38-1,265,456,111.76-499,312,373.58

Finding the Fourth Proportional to 917,001,088.38, 1,265,456,111.76 and 499,312,373.58

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Solution

The fourth proportional to 917,001,088.38, 1,265,456,111.76 and 499,312,373.58 is: 689,048,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,001,088.38 : 1,265,456,111.76 = 499,312,373.58 : x
  2. Step 2: Convert to fraction form
    917,001,088.38/1,265,456,111.76 = 499,312,373.58/x
  3. Step 3: Cross multiply
    917,001,088.38x = 1,265,456,111.76 × 499,312,373.58
  4. Step 4: Simplify right side
    917,001,088.38x = 631,857,894,824,203,264
  5. Step 5: Solve for x
    x = 631,857,894,824,203,264/917,001,088.38
  6. Step 6: Final answer
    x = 689,048,140.54

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1.5x scale

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.