Home / 781,629,109.44-1,078,666,911.40-424,411,942.14

Finding the Fourth Proportional to 781,629,109.44, 1,078,666,911.40 and 424,411,942.14

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Solution

The fourth proportional to 781,629,109.44, 1,078,666,911.40 and 424,411,942.14 is: 585,698,655.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,629,109.44 : 1,078,666,911.40 = 424,411,942.14 : x
  2. Step 2: Convert to fraction form
    781,629,109.44/1,078,666,911.40 = 424,411,942.14/x
  3. Step 3: Cross multiply
    781,629,109.44x = 1,078,666,911.40 × 424,411,942.14
  4. Step 4: Simplify right side
    781,629,109.44x = 457,799,118,789,429,312
  5. Step 5: Solve for x
    x = 457,799,118,789,429,312/781,629,109.44
  6. Step 6: Final answer
    x = 585,698,655.87

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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.