Home / 921,977,284.66-1,272,338,522.16-504,280,638.34

Finding the Fourth Proportional to 921,977,284.66, 1,272,338,522.16 and 504,280,638.34

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Solution

The fourth proportional to 921,977,284.66, 1,272,338,522.16 and 504,280,638.34 is: 695,912,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,977,284.66 : 1,272,338,522.16 = 504,280,638.34 : x
  2. Step 2: Convert to fraction form
    921,977,284.66/1,272,338,522.16 = 504,280,638.34/x
  3. Step 3: Cross multiply
    921,977,284.66x = 1,272,338,522.16 × 504,280,638.34
  4. Step 4: Simplify right side
    921,977,284.66x = 641,615,682,139,417,088
  5. Step 5: Solve for x
    x = 641,615,682,139,417,088/921,977,284.66
  6. Step 6: Final answer
    x = 695,912,678.99

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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.