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Finding the Fourth Proportional to 604,897.40, 907,346.10 and 405,831.80

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Solution

The fourth proportional to 604,897.40, 907,346.10 and 405,831.80 is: 608,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,897.40 : 907,346.10 = 405,831.80 : x
  2. Step 2: Convert to fraction form
    604,897.40/907,346.10 = 405,831.80/x
  3. Step 3: Cross multiply
    604,897.40x = 907,346.10 × 405,831.80
  4. Step 4: Simplify right side
    604,897.40x = 368,229,900,985.98
  5. Step 5: Solve for x
    x = 368,229,900,985.98/604,897.40
  6. Step 6: Final answer
    x = 608,747.70

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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.