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Finding the Fourth Proportional to 707,985.59, 977,026.82 and 402,068.34

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Solution

The fourth proportional to 707,985.59, 977,026.82 and 402,068.34 is: 554,858.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,985.59 : 977,026.82 = 402,068.34 : x
  2. Step 2: Convert to fraction form
    707,985.59/977,026.82 = 402,068.34/x
  3. Step 3: Cross multiply
    707,985.59x = 977,026.82 × 402,068.34
  4. Step 4: Simplify right side
    707,985.59x = 392,831,549,642.54
  5. Step 5: Solve for x
    x = 392,831,549,642.54/707,985.59
  6. Step 6: Final answer
    x = 554,858.12

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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.