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Finding the Fourth Proportional to 530,006.85, 731,342.91 and 358,298.34

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Solution

The fourth proportional to 530,006.85, 731,342.91 and 358,298.34 is: 494,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,006.85 : 731,342.91 = 358,298.34 : x
  2. Step 2: Convert to fraction form
    530,006.85/731,342.91 = 358,298.34/x
  3. Step 3: Cross multiply
    530,006.85x = 731,342.91 × 358,298.34
  4. Step 4: Simplify right side
    530,006.85x = 262,038,950,623.77
  5. Step 5: Solve for x
    x = 262,038,950,623.77/530,006.85
  6. Step 6: Final answer
    x = 494,406.72

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1.5x scale

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.