Home / 679,087,155.47-1,018,629,461.84-212,784,277.10

Finding the Fourth Proportional to 679,087,155.47, 1,018,629,461.84 and 212,784,277.10

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Solution

The fourth proportional to 679,087,155.47, 1,018,629,461.84 and 212,784,277.10 is: 319,176,017.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,087,155.47 : 1,018,629,461.84 = 212,784,277.10 : x
  2. Step 2: Convert to fraction form
    679,087,155.47/1,018,629,461.84 = 212,784,277.10/x
  3. Step 3: Cross multiply
    679,087,155.47x = 1,018,629,461.84 × 212,784,277.10
  4. Step 4: Simplify right side
    679,087,155.47x = 216,748,333,670,386,432
  5. Step 5: Solve for x
    x = 216,748,333,670,386,432/679,087,155.47
  6. Step 6: Final answer
    x = 319,176,017.28

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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.