Home / 538,831,985.10-808,247,977.65-422,605,838.40

Finding the Fourth Proportional to 538,831,985.10, 808,247,977.65 and 422,605,838.40

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Solution

The fourth proportional to 538,831,985.10, 808,247,977.65 and 422,605,838.40 is: 633,908,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,831,985.10 : 808,247,977.65 = 422,605,838.40 : x
  2. Step 2: Convert to fraction form
    538,831,985.10/808,247,977.65 = 422,605,838.40/x
  3. Step 3: Cross multiply
    538,831,985.10x = 808,247,977.65 × 422,605,838.40
  4. Step 4: Simplify right side
    538,831,985.10x = 341,570,314,229,882,688
  5. Step 5: Solve for x
    x = 341,570,314,229,882,688/538,831,985.10
  6. Step 6: Final answer
    x = 633,908,757.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.