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Finding the Fourth Proportional to 679,521.86, 937,746.21 and 369,425.07

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Solution

The fourth proportional to 679,521.86, 937,746.21 and 369,425.07 is: 509,809.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,521.86 : 937,746.21 = 369,425.07 : x
  2. Step 2: Convert to fraction form
    679,521.86/937,746.21 = 369,425.07/x
  3. Step 3: Cross multiply
    679,521.86x = 937,746.21 × 369,425.07
  4. Step 4: Simplify right side
    679,521.86x = 346,426,959,271.49
  5. Step 5: Solve for x
    x = 346,426,959,271.49/679,521.86
  6. Step 6: Final answer
    x = 509,809.89

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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.