Home / 1,323,447,145.80-1,985,170,718.70-340,871,785.80

Finding the Fourth Proportional to 1,323,447,145.80, 1,985,170,718.70 and 340,871,785.80

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Solution

The fourth proportional to 1,323,447,145.80, 1,985,170,718.70 and 340,871,785.80 is: 511,307,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323,447,145.80 : 1,985,170,718.70 = 340,871,785.80 : x
  2. Step 2: Convert to fraction form
    1,323,447,145.80/1,985,170,718.70 = 340,871,785.80/x
  3. Step 3: Cross multiply
    1,323,447,145.80x = 1,985,170,718.70 × 340,871,785.80
  4. Step 4: Simplify right side
    1,323,447,145.80x = 676,688,688,001,138,432
  5. Step 5: Solve for x
    x = 676,688,688,001,138,432/1,323,447,145.80
  6. Step 6: Final answer
    x = 511,307,678.70

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Double scale
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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.