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Finding the Fourth Proportional to 434,047.80, 651,071.70 and 286,303.80

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Solution

The fourth proportional to 434,047.80, 651,071.70 and 286,303.80 is: 429,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,047.80 : 651,071.70 = 286,303.80 : x
  2. Step 2: Convert to fraction form
    434,047.80/651,071.70 = 286,303.80/x
  3. Step 3: Cross multiply
    434,047.80x = 651,071.70 × 286,303.80
  4. Step 4: Simplify right side
    434,047.80x = 186,404,301,782.46
  5. Step 5: Solve for x
    x = 186,404,301,782.46/434,047.80
  6. Step 6: Final answer
    x = 429,455.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.