Home / 908,078,418.10-1,253,148,205.49-490,390,666.48

Finding the Fourth Proportional to 908,078,418.10, 1,253,148,205.49 and 490,390,666.48

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Solution

The fourth proportional to 908,078,418.10, 1,253,148,205.49 and 490,390,666.48 is: 676,739,113.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,078,418.10 : 1,253,148,205.49 = 490,390,666.48 : x
  2. Step 2: Convert to fraction form
    908,078,418.10/1,253,148,205.49 = 490,390,666.48/x
  3. Step 3: Cross multiply
    908,078,418.10x = 1,253,148,205.49 × 490,390,666.48
  4. Step 4: Simplify right side
    908,078,418.10x = 614,532,183,688,457,088
  5. Step 5: Solve for x
    x = 614,532,183,688,457,088/908,078,418.10
  6. Step 6: Final answer
    x = 676,739,113.54

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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.