Home / 1,090,344,887.45-1,504,655,508.09-666,927,445.04

Finding the Fourth Proportional to 1,090,344,887.45, 1,504,655,508.09 and 666,927,445.04

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Solution

The fourth proportional to 1,090,344,887.45, 1,504,655,508.09 and 666,927,445.04 is: 920,347,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,344,887.45 : 1,504,655,508.09 = 666,927,445.04 : x
  2. Step 2: Convert to fraction form
    1,090,344,887.45/1,504,655,508.09 = 666,927,445.04/x
  3. Step 3: Cross multiply
    1,090,344,887.45x = 1,504,655,508.09 × 666,927,445.04
  4. Step 4: Simplify right side
    1,090,344,887.45x = 1,003,496,053,675,826,688
  5. Step 5: Solve for x
    x = 1,003,496,053,675,826,688/1,090,344,887.45
  6. Step 6: Final answer
    x = 920,347,373.78

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Double scale
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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.