Home / 651,931.40-976,730.70-402,321.80

Finding the Fourth Proportional to 651,931.40, 976,730.70 and 402,321.80

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Solution

The fourth proportional to 651,931.40, 976,730.70 and 402,321.80 is: 602,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,931.40 : 976,730.70 = 402,321.80 : x
  2. Step 2: Convert to fraction form
    651,931.40/976,730.70 = 402,321.80/x
  3. Step 3: Cross multiply
    651,931.40x = 976,730.70 × 402,321.80
  4. Step 4: Simplify right side
    651,931.40x = 392,960,053,339.26
  5. Step 5: Solve for x
    x = 392,960,053,339.26/651,931.40
  6. Step 6: Final answer
    x = 602,762.89

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1.5x scale

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.