Home / 708,637.85-977,878.10-402,671.76

Finding the Fourth Proportional to 708,637.85, 977,878.10 and 402,671.76

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Solution

The fourth proportional to 708,637.85, 977,878.10 and 402,671.76 is: 555,663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,637.85 : 977,878.10 = 402,671.76 : x
  2. Step 2: Convert to fraction form
    708,637.85/977,878.10 = 402,671.76/x
  3. Step 3: Cross multiply
    708,637.85x = 977,878.10 × 402,671.76
  4. Step 4: Simplify right side
    708,637.85x = 393,763,893,579.10
  5. Step 5: Solve for x
    x = 393,763,893,579.10/708,637.85
  6. Step 6: Final answer
    x = 555,663.09

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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.