Home / 1,290,545,907.98-1,935,815,909.49-553,137,665.72

Finding the Fourth Proportional to 1,290,545,907.98, 1,935,815,909.49 and 553,137,665.72

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Solution

The fourth proportional to 1,290,545,907.98, 1,935,815,909.49 and 553,137,665.72 is: 829,705,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,545,907.98 : 1,935,815,909.49 = 553,137,665.72 : x
  2. Step 2: Convert to fraction form
    1,290,545,907.98/1,935,815,909.49 = 553,137,665.72/x
  3. Step 3: Cross multiply
    1,290,545,907.98x = 1,935,815,909.49 × 553,137,665.72
  4. Step 4: Simplify right side
    1,290,545,907.98x = 1,070,772,693,429,258,368
  5. Step 5: Solve for x
    x = 1,070,772,693,429,258,368/1,290,545,907.98
  6. Step 6: Final answer
    x = 829,705,233.12

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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.