Home / 6,985,931.40-10,478,897.10-5,285,320.20

Finding the Fourth Proportional to 6,985,931.40, 10,478,897.10 and 5,285,320.20

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Solution

The fourth proportional to 6,985,931.40, 10,478,897.10 and 5,285,320.20 is: 7,927,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985,931.40 : 10,478,897.10 = 5,285,320.20 : x
  2. Step 2: Convert to fraction form
    6,985,931.40/10,478,897.10 = 5,285,320.20/x
  3. Step 3: Cross multiply
    6,985,931.40x = 10,478,897.10 × 5,285,320.20
  4. Step 4: Simplify right side
    6,985,931.40x = 55,384,326,516,351.42
  5. Step 5: Solve for x
    x = 55,384,326,516,351.42/6,985,931.40
  6. Step 6: Final answer
    x = 7,927,980.30

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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.