Home / 1,090,947,934.80-1,505,134,715.40-620,931,658.32

Finding the Fourth Proportional to 1,090,947,934.80, 1,505,134,715.40 and 620,931,658.32

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Solution

The fourth proportional to 1,090,947,934.80, 1,505,134,715.40 and 620,931,658.32 is: 856,673,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,947,934.80 : 1,505,134,715.40 = 620,931,658.32 : x
  2. Step 2: Convert to fraction form
    1,090,947,934.80/1,505,134,715.40 = 620,931,658.32/x
  3. Step 3: Cross multiply
    1,090,947,934.80x = 1,505,134,715.40 × 620,931,658.32
  4. Step 4: Simplify right side
    1,090,947,934.80x = 934,585,794,828,323,328
  5. Step 5: Solve for x
    x = 934,585,794,828,323,328/1,090,947,934.80
  6. Step 6: Final answer
    x = 856,673,141.78

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Double scale
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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.