Home / 752,408,509.39-1,038,326,148.48-417,880,971.21

Finding the Fourth Proportional to 752,408,509.39, 1,038,326,148.48 and 417,880,971.21

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Solution

The fourth proportional to 752,408,509.39, 1,038,326,148.48 and 417,880,971.21 is: 576,677,076.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,408,509.39 : 1,038,326,148.48 = 417,880,971.21 : x
  2. Step 2: Convert to fraction form
    752,408,509.39/1,038,326,148.48 = 417,880,971.21/x
  3. Step 3: Cross multiply
    752,408,509.39x = 1,038,326,148.48 × 417,880,971.21
  4. Step 4: Simplify right side
    752,408,509.39x = 433,896,739,359,561,024
  5. Step 5: Solve for x
    x = 433,896,739,359,561,024/752,408,509.39
  6. Step 6: Final answer
    x = 576,677,076.28

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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.