Home / 689,725,624.61-953,066,420.51-491,142,356.82

Finding the Fourth Proportional to 689,725,624.61, 953,066,420.51 and 491,142,356.82

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Solution

The fourth proportional to 689,725,624.61, 953,066,420.51 and 491,142,356.82 is: 678,663,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,725,624.61 : 953,066,420.51 = 491,142,356.82 : x
  2. Step 2: Convert to fraction form
    689,725,624.61/953,066,420.51 = 491,142,356.82/x
  3. Step 3: Cross multiply
    689,725,624.61x = 953,066,420.51 × 491,142,356.82
  4. Step 4: Simplify right side
    689,725,624.61x = 468,091,287,972,826,880
  5. Step 5: Solve for x
    x = 468,091,287,972,826,880/689,725,624.61
  6. Step 6: Final answer
    x = 678,663,038.28

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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.