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Finding the Fourth Proportional to 583,631.72, 805,411.75 and 315,359.72

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Solution

The fourth proportional to 583,631.72, 805,411.75 and 315,359.72 is: 435,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,631.72 : 805,411.75 = 315,359.72 : x
  2. Step 2: Convert to fraction form
    583,631.72/805,411.75 = 315,359.72/x
  3. Step 3: Cross multiply
    583,631.72x = 805,411.75 × 315,359.72
  4. Step 4: Simplify right side
    583,631.72x = 253,994,423,964.71
  5. Step 5: Solve for x
    x = 253,994,423,964.71/583,631.72
  6. Step 6: Final answer
    x = 435,196.40

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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.