Home / 13,345,231,139.56-18,415,201,711.03-7,918,831,561.78

Finding the Fourth Proportional to 13,345,231,139.56, 18,415,201,711.03 and 7,918,831,561.78

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Solution

The fourth proportional to 13,345,231,139.56, 18,415,201,711.03 and 7,918,831,561.78 is: 10,927,265,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345,231,139.56 : 18,415,201,711.03 = 7,918,831,561.78 : x
  2. Step 2: Convert to fraction form
    13,345,231,139.56/18,415,201,711.03 = 7,918,831,561.78/x
  3. Step 3: Cross multiply
    13,345,231,139.56x = 18,415,201,711.03 × 7,918,831,561.78
  4. Step 4: Simplify right side
    13,345,231,139.56x = 145,826,880,525,849,411,584
  5. Step 5: Solve for x
    x = 145,826,880,525,849,411,584/13,345,231,139.56
  6. Step 6: Final answer
    x = 10,927,265,253.10

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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.