Home / 820,929,938.40-1,229,677,966.80-384,603,026.40

Finding the Fourth Proportional to 820,929,938.40, 1,229,677,966.80 and 384,603,026.40

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Solution

The fourth proportional to 820,929,938.40, 1,229,677,966.80 and 384,603,026.40 is: 576,100,158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,929,938.40 : 1,229,677,966.80 = 384,603,026.40 : x
  2. Step 2: Convert to fraction form
    820,929,938.40/1,229,677,966.80 = 384,603,026.40/x
  3. Step 3: Cross multiply
    820,929,938.40x = 1,229,677,966.80 × 384,603,026.40
  4. Step 4: Simplify right side
    820,929,938.40x = 472,937,867,528,678,656
  5. Step 5: Solve for x
    x = 472,937,867,528,678,656/820,929,938.40
  6. Step 6: Final answer
    x = 576,100,158.38

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1.5x scale

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.